Windows Defender Definition Update error 0x80070643

[winchester73]

Anyone noticing that Windows Update is throwing off Windows Defender Definition Update error 0x80070643 messages will want to note that the issue has been fixed: https://www.tenforums.com/windows-updates-activation/80978-windows-defender-definition-update-error-0x80070643.html

I've been experiencing it for the last few days, and now everything is back to normal.